Working Papers and Chapters and Reporter Articles

We provide three sets of variance decompositions on microeconomic international relative price data. The first shows that the overall distribution of absolute deviations from the Law of One Price (LOP) is dominated by cross-sectional variation in long-term averages, not by time-series variation around the long-term averages. The second shows that time-series variation in changes in LOP deviations is dominated by idiosyncratic, goods-specific variation, not by aggregate variation such as that arising from nominal exchange rates. The third shows that time-series and cross-sectional variance are connected across goods. Goods that exhibit high cross-sectional variance also exhibit high time-series variance. Moreover, when this connection is made conditional on the tradeability of a goods, a tw...

High interest rate currencies tend to appreciate. This is the uncovered interest rate parity (UIP) puzzle. It is primarily a statement about short-term interest rates and how they are related to exchange rates. Short-term interest rates are strongly affected by monetary policy. The UIP puzzle, therefore, can be restated in terms of monetary policy. Do foreign and domestic monetary policies imply exchange rates that violate UIP? We represent monetary policy as foreign and domestic Taylor rules. Foreign and domestic pricing kernels determine the relationship between these Taylor rules and exchange rates. We examine different specifications for the Taylor rule and ask which can resolve the UIP puzzle. We find evidence in favor of a particular asymmetry. If the foreign Taylor rule re...

With US trade and current account deficits approaching 6% of GDP, some have argued that the country is "on the comfortable path to ruin" and that the required "adjustment'' may be painful. We suggest instead that things are fine: although national saving is low, the ratios of household and consolidated net worth to GDP remain high. In our view, the most striking features of the world at present are the low rates of investment and growth in some of the richest countries, whose surpluses account for about half of the US deficit. The result is that financial capital is flowing out of countries with low investment and growth and into the US and other fast-growing countries. Oil exporters account for much of the rest.